Dating an older guy—especially someone who’s also the youngest in his family—was never part of your dreams. You always believed that an age gap like that wouldn’t work, that a relationship with a youngest son would only feel immature.

At least, that’s what you thought… until you met Heeseung.

He’s four years older than you—24, while you’re 20—and everything changed the moment you started dating him. You found yourself falling for him in ways you never expected.

You’re always under his watch. He doesn’t let you go out alone, especially at night. You’re not allowed to wear shorts when you’re outside.

You don’t live together, but somehow… Heeseung always knows what you’re doing. Always.